Abstract: The invention aims at a non-invasive method of early diagnosis of gastric cancer, using as a biomarker the levels of methylation of the DNA sequence of the promoter of the Reprimo-like gene in plasma. The inventors have established the utility of Reprimo-like as a biomarker, and especially as a biomarker for the early detection of gastric cancer, since they have determined that Reprimo-like is consistently silenced in gastric cancer, both in incipient and advanced stages. This silencing is given by methylation of its promoter region, which is detectable in plasma samples, allowing us to measure it as a liquid biopsy in a non-invasive, fast and inexpensive way.

Abstract: The invention is directed to a method for the early detection of gastric cancer, by detecting the increase in DNA methylation of the promoter region of the microRNA-335-5p in samples obtained non-invasively, preferably in plasma. Thus, it is a contribution for the early detection of gastric cancer, without invasive procedures, with rapid collection of the sample and of the delivery of the results, and of lower cost than the technologies that employ invasive diagnostic techniques to the human and animal body in general.

Abstract: The invention relates to a non-invasive method for detecting gastric cancer based on the detection of a new molecular marker in blood. In particular, via the detection of the long non-coding RNA (LncRNA) KCNQ1OT1 in peripheral blood, wherein an increase in the expression of this LncRNA correlates with gastric cancer or the precursor lesions thereof (OLGA stage III and IV).

Abstract: The invention aims at a non-invasive method of early diagnosis of gastric cancer, using as a biomarker the levels of methylation of the DNA sequence of the promoter of the Reprimo-like gene in plasma. The inventors have established the utility of Reprimo-like as a biomarker, and especially as a biomarker for the early detection of gastric cancer, since they have determined that Reprimo-like is consistently silenced in gastric cancer, both in incipient and advanced stages. This silencing is given by methylation of its promoter region, which is detectable in plasma samples, allowing us to measure it as a liquid biopsy in a non-invasive, fast and inexpensive way.

Abstract: The invention is directed to a method for the early detection of gastric cancer, by detecting the increase in DNA methylation of the promoter region of the microRNA-335-5p in samples obtained non-invasively, preferably in plasma. Thus, it is a contribution for the early detection of gastric cancer, without invasive procedures, with rapid collection of the sample and of the delivery of the results, and of lower cost than the technologies that employ invasive diagnostic techniques to the human and animal body in general.

Abstract: The invention relates to a non-invasive method for the early detection of stomach cancer, based on the identification of a biomarker. The biomarker corresponds to the methylated promoter region of the Reprimo gene.